#include <REGX52.H>
unsigned char NIXIE_table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
void NIXIE(unsigned char location,unsigned char number)
{
	switch(location)
	{
		case 8: P2_2=0,P2_3=0,P2_4=0;break;
		case 7: P2_2=1,P2_3=0,P2_4=0;break;
		case 6: P2_2=0,P2_3=1,P2_4=0;break;
		case 5: P2_2=1,P2_3=1,P2_4=0;break;
		case 4: P2_2=0,P2_3=0,P2_4=1;break;
		case 3: P2_2=1,P2_3=0,P2_4=1;break;
		case 2: P2_2=0,P2_3=1,P2_4=1;break;
		case 1: P2_2=1,P2_3=1,P2_4=1;break;	
	}
	P0=NIXIE_table[number];
}
void main()
{
	NIXIE(1,9);
	while(1);
}

